Electricity: measuring and testing – Particle precession resonance – Using well logging device
Reexamination Certificate
2006-10-03
2006-10-03
Shrivastav, Brij B. (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using well logging device
C324S300000
Reexamination Certificate
active
07116103
ABSTRACT:
A method of evaluating a characteristic of a fluid in a region, and a nuclear magnetic resonance (NMR) well logging apparatus for the implementation thereof, is disclosed. A magnetic field gradient is applied to the region, and first and second sequences of magnetic field gradient is applied to the region, with the second sequence differing in a pulse characteristic from the first sequence. A magnetization spectrum resulting from each of the sequences of pulse is captured, and a change in the magnetization spectrum resulting from the first and second sequences of pulses is analyzed to extract information about the fluid.
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Edwards Carl M.
Georgi Daniel T.
Baker Hughes Incorporated
Cantor & Colburn LLP
Shrivastav Brij B.
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